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lilavasa [31]
1 year ago
11

An image point after a 180 rotation is (3,7). What were the coordinates of the pre-image point?(A)Z(-3,-7) (B)Z(7,3) (C)Z(-7,-3)

(D)Z(7,-3)
Mathematics
1 answer:
Ilia_Sergeevich [38]1 year ago
4 0

Answer:

(A)Z(-3,-7)

Explanation:

The rotation of a point (x,y) by 180 degrees gives the point (-x,-y).

That is:

\text{Rotation by }180^0=(x,y)\rightarrow(-x,-y)

If the image point after rotation is (3,7), the coordinates of the pre-image will be:

(x,y)=Z(-3,-7)

The correct option is A.

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What do the asymptotes represent when we graph the tangent function? Where are they?
Alisiya [41]

Answer:

The asymptotes are the x-values for which the tangent function is not defined. We draw these in to remind us that the function does not cross that line. They are the odd multiples of 90°

7 0
3 years ago
Given f(x) = 3x-4 and g(x)= -2x+7 evaluate. PLEASE HELP.
Roman55 [17]

see the attachments below for the steps :)

The simplified expression is as follows:

d(-3x^2 + 9x - 14)

8 0
3 years ago
Read 2 more answers
find the least length of a rod which can be cut into exactly epual strips,each of either 36cm or 42cm in length​
Triss [41]

Step-by-step explanation:

so, we need to find the smallest common multiple of 36 and 42.

that is the smallest number I can divide both by 36 and 42 without remain.

let's use the method of basic prime factors (we start with the smallest fitting prime number - 2 is a prime number too - and divide as often as possible, then continue with the next bigger prime number, until there is nothing left to divide) :

36 / 2 = 18

18 / 2 = 9

9 / 3 = 3

3 / 3 = 1 finished

therefore,

36 = 2×2×3×3

42 / 2 = 21

21 / 3 = 7

7 / 5 does not work

7 / 7 = 1 finished

therefore,

42 = 2×3×7

to find the smallest common multiple (SCM) we check the maximum length of each prime factor sequence.

and we see 2 times 2, 2 times 3 and 1 time 7.

so, the SCM = 2×2×3×3×7 = 252.

there is no smaller number that can be divided by both 36 and 42 without remain.

so, the rod must be at least 252 cm long to cut it into equally long pieces of either 36 cm (7 pieces) or 42 cm (6 pieces).

5 0
3 years ago
Jessa completed a bike ride in 3 hours and 18 minutes. Write Jessa's biking time as a decimal to TWO decimal places.
Tju [1.3M]
Steps to Calculate Hours

3ℎ+18×1ℎ60+0×1ℎ3600
3
h
r
+
18
m
i
n
×
1
h
r
60
m
i
n
+
0
s
×
1
h
r
3600
s
=3ℎ+0.3ℎ+0ℎ
=
3
h
r
+
0.3
h
r
+
0
h
r
=3.3ℎ

Steps to Calculate Minutes

3ℎ×601ℎ+18+0×160
3
h
r
×
60
m
i
n
1
h
r
+
18
m
i
n
+
0
s
×
1
m
i
n
60
s
=180+18+0
=
180
m
i
n
+
18
m
i
n
+
0
m
i
n
=198
=
198
m
i
n

Steps to Calculate Seconds

3ℎ×36001ℎ+18×601+0
3
h
r
×
3600
s
1
h
r
+
18
m
i
n
×
60
s
1
m
i
n
+
0
s

=10800+1080+0
=
10800
s
+
1080
s
+
0
s
=11880
=
11880
s
hope this helps
6 0
3 years ago
Let x and y be whole numbers greater than 0 with y > x. Which has the greater value, 3^x or 3^y? Explain.
Dominik [7]
3^y, x&y both have to be greater than 0 in which case the greater number will have the greatest value , since y >x . 3^y > 3^x
8 0
4 years ago
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